Last updated: February 24, 2025
In May, Flagstaff, United States experiences a delightful range of temperatures, with maximums reaching 30°C (86°F) and minimums dipping to -3°C (27°F). The average temperature stands at a comfortable 13°C (57°F), making it an ideal time for outdoor activities. This month sees approximately 32 mm (1.3 in) of precipitation spread over 6 days, contributing to the area's lush greenery. With a humidity level of 46%, visitors can enjoy refreshing spring weather while soaking in the vibrant natural beauty of Flagstaff.
In May, Flagstaff, United States, experiences a welcome transition from the chilly grip of spring to the warmth of early summer. With temperatures ranging from a mild minimum of -3°C (27°F) to a comfortable maximum of 30°C (86°F), the city showcases an average of 13°C (57°F) that invites outdoor adventures. This month marks a significant rise in warmth, following the progressive increase noted in April, which sets the stage for vibrant blooms and longer days. As the landscape shifts and the weather becomes more inviting, locals and visitors alike can embrace the beauty of Flagstaff under the sun, making May a truly delightful time to explore the great outdoors.
In May, Flagstaff experiences a moderate shift in weather, marked by an average precipitation of 32 mm (1.3 in) over 6 days. This marks a slight increase from April's drier conditions, which saw only 22 mm of rain. The trend suggests a transition towards the monsoon season, as the surrounding mountains begin to bloom with spring foliage. However, this month remains relatively dry compared to the deluge of rain expected in July, where precipitation peaks dramatically at 148 mm (5.8 in). May serves as a gentle reminder of the balance in Flagstaff's climate, bridging the cool, crisp air of spring with the impending freshness of summer showers.
As spring unfolds in Flagstaff, May brings a refreshing dip in humidity levels, dropping to 46%. This significant decrease follows a trend of diminishing moisture from the previous months, where January and February saw much higher humidity at 80% and 83%, respectively. By April, humidity had already lightened to 63%, hinting at the approaching dry conditions of summer. As the temperatures rise, June and July will experience even lower humidity, reaching a mere 35% and 33%. This transition not only provides a welcome relief from the heavier moisture of winter but also sets the stage for the arid climate of the warmer months ahead, making May a pivotal point in Flagstaff’s annual weather cycle.
As May rolls into Flagstaff, the UV Index reaches a striking 12, placing it firmly in the extreme exposure category and signaling a burn time of just 10 minutes. This escalation from previous months mirrors a trend observed since February, where the UV Index has steadily climbed from a moderate 5 to an alarming high, peaking only to be closely followed by June's even more intense 13. With every month, the sun's intensity becomes a greater concern, emphasizing the importance of sun safety practices. So whether you're hiking the scenic trails or simply enjoying the outdoor festivities, remember to stay protected. For more details, check out the full report at Flagstaff UV Index.
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In Flagstaff, United States, the month of May shines brighter than many, boasting an impressive 374 hours of sunlight. This surge marks a significant leap from April’s 331 hours, setting the stage for the vibrant summer ahead. As winter bids farewell in the earlier months of the year, sunlight hours gradually increase, with a notable climb from 188 hours in January to the springtime glow of 301 hours in March. Following May, June continues this trend with even more sunshine, reaching 375 hours, creating a dazzling transition into summer. The steady rise in sunlight hours not only brightens the days but also enhances the charm of Flagstaff’s breathtaking landscapes during this period, inviting residents and visitors alike to bask in the warm embrace of spring.
With May approaching, Flagstaff residents can look forward to a notably sunny outlook, as the likelihood of sunshine reaches 77%—the highest for the month. This positive trend continues from April's promising 73% chance, following a series of months where sunshine gradually increased. While January and February experienced lower percentages at 51% and 71% respectively, the sun's presence becomes more reliable as spring unfolds. However, as summer nears, the chances dip in July to 31%, contrasting sharply with May’s bright forecast. Enjoying the vibrant, sunny days of May seems almost certain, making it a perfect time for outdoor activities in this picturesque region.
In Flagstaff, the progression of daylight hours showcases the changing rhythms of the seasons. Beginning the year with 10 hours of daylight in both January and February, the city experiences a gradual increase as spring approaches, reaching 11 hours by March and 13 hours in April. May marks a peak in daylight, featuring 14 hours of sunlight, a vibrant invitation to outdoor activities. This extended daylight persists into June and July, fostering an atmosphere of summer exploration. As August rolls in, the days start to shorten slightly, settling back to 13 hours. The transition into fall brings a steady decline, with 12 hours in September and tapering down to 10 hours by November. December, with only 9 hours of daylight, wraps up the year with a reflective return to the cozy embrace of winter evenings. Overall, the fluctuation in daylight hours highlights the beautiful rhythm of nature in Flagstaff, guiding residents through the seasons.
In Flagstaff, May marks a subtle yet notable transition in wind patterns. With an average wind speed of 3.3 m/s (7 mph), May maintains momentum from the previous months, particularly April, which had the highest winds at 3.6 m/s (8 mph). As spring reaches its peak, the wind begins to echo the warmth of approaching summer, although it dips slightly before June's expected decrease to 2.9 m/s (6 mph). This month strikes a balance with breezes that are neither too strong nor too mild, creating an invigorating atmosphere perfect for outdoor activities. While the wind speeds fluctuate throughout the year, the comforting presence of May's gentle winds signifies a delightful shift into the summer season in this picturesque locale.
The weather in Flagstaff changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Flagstaff and find detailed weather information for every month.
May and January present stark contrasts in weather patterns. In May, temperatures range from a chilly -3°C (27°F) at night to a warm 30°C (86°F) during the day, with an average of 13°C (57°F). Precipitation is relatively low at 32 mm (1.3 in) over about 6 days, and humidity is moderate at 46%. In contrast, January experiences much colder temperatures, with a minimum of -18°C (0°F) and a maximum of only 14°C (58°F), averaging around 0°C (32°F). January also sees higher precipitation at 47 mm (1.8 in) over 7 days, along with a significantly higher humidity level of 80%. For more details, check out Flagstaff weather in January.
May and February present stark contrasts in weather conditions. In February, temperatures range from a chilly minimum of -19°C (-2°F) to a maximum of 17°C (63°F), with an average of just 1°C (34°F). This month also sees higher humidity levels at 83% and greater precipitation of 50 mm (2.0 in) over about 7 days. In contrast, May boasts milder temperatures, with minimums around -3°C (27°F), averages of 13°C (57°F), and maximums reaching 30°C (86°F). Precipitation decreases in May to 32 mm (1.3 in) and occurs over fewer days, with humidity levels at a more comfortable 46%. For more detailed information, you can check Flagstaff weather in February.
When comparing the weather in May and March, it’s clear that May enjoys significantly warmer temperatures, with a minimum of -3°C (27°F) and an average high of 30°C (86°F). In contrast, March presents a chillier scenario, with temperatures dropping to a minimum of -14°C (8°F) and an average high of only 20°C (69°F). Additionally, March has higher precipitation levels, with a total of 61 mm (2.4 in) over 9 days, compared to May's 32 mm (1.3 in) over just 6 days. Humidity levels also differ notably, as March experiences a higher humidity of 72%, while May has a more comfortable level at 46%. For those interested in more detailed information, visit Flagstaff weather in March.
Comparing the weather between April and May reveals noticeable differences in temperature and precipitation. In April, temperatures ranged from a minimum of -7°C (20°F) to a maximum of 26°C (79°F), with an average temperature of 9°C (49°F) and 22 mm (0.9 in) of precipitation over four days. The humidity was relatively high at 63%. In contrast, May saw a broader temperature range, with minimums dropping to -3°C (27°F) and maximums soaring to 30°C (86°F), giving an average temperature of 13°C (57°F). Although May had slightly more precipitation at 32 mm (1.3 in) over six days, its humidity was lower at 46%. For a more detailed overview of the temperatures in April, you can check Flagstaff weather in April.
May tends to have cooler temperatures, with a minimum reaching as low as -3°C (27°F) and an average of 13°C (57°F), while June sees a significant rise, with temperatures ranging from a minimum of 3°C (37°F) to an average of 20°C (69°F). Additionally, June experiences warmer conditions, peaking at a maximum of 35°C (95°F), compared to May's maximum of 30°C (86°F). Precipitation in May is also more frequent, with 32 mm (1.3 in) over 6 days, while June is much drier, receiving only 11 mm (0.4 in) over just 2 days. Furthermore, humidity levels drop from 46% in May to 35% in June, contributing to a more comfortable atmosphere. For more detailed information, you can visit Flagstaff weather in June.
May and July present distinct contrasts in weather patterns. In May, temperatures range from a chilly minimum of -3°C (27°F) to a comfortable average of 13°C (57°F), with a peak of 30°C (86°F). This month sees relatively low precipitation at 32 mm (1.3 in) over just 6 days, along with a humidity level of 46%. In contrast, July experiences warmer temperatures, with a minimum of 9°C (48°F), an average of 21°C (70°F), and a maximum reaching 35°C (95°F). However, it is also much wetter, with 148 mm (5.8 in) of rain falling over 16 days, coupled with lower humidity at 33%. For a more detailed look at what to expect, you can check out Flagstaff weather in July.
May and August exhibit notable differences in weather patterns. In May, temperatures range from a chilly minimum of -3°C (27°F) to a warm maximum of 30°C (86°F), with an average of 13°C (57°F). The month experiences relatively low precipitation, totaling 32 mm (1.3 in) over just 6 days, and a humidity level of 46%. In contrast, August presents warmer temperatures, with a minimum of 9°C (48°F), an average of 20°C (69°F), and a maximum reaching 33°C (92°F). However, it also sees more precipitation, accumulating 69 mm (2.7 in) across 13 days, and slightly lower humidity at 41%. For a more comprehensive look at August weather, visit Flagstaff weather in August.
May and September in Flagstaff offer contrasting weather experiences, with each month showcasing its own unique characteristics. In May, temperatures range from a chilly -3°C (27°F) at night to a warm 30°C (86°F) during the day, with an average of 13°C (57°F). This month sees around 32 mm (1.3 in) of precipitation over approximately six days, accompanied by a humidity level of 46%. In contrast, September features slightly milder overnight lows of -1°C (31°F) and higher daytime highs reaching 33°C (91°F), with an average temperature of 17°C (63°F). Precipitation increases to 49 mm (1.9 in) spread across seven days, and humidity rises to 59%. For a detailed look at weather conditions in September, check out Flagstaff weather in September.
May and October present distinct weather patterns, with May offering a broader temperature range, from a chilly minimum of -3°C (27°F) to a warm maximum of 30°C (86°F) and an average of 13°C (57°F). In contrast, October experiences cooler conditions, where temperatures can drop to a minimum of -8°C (17°F), have an average of 11°C (51°F), and reach a maximum of 26°C (80°F). Precipitation levels are relatively comparable, with May receiving 32 mm (1.3 in) over 6 days and October slightly higher at 34 mm (1.4 in) but over just 5 days. Additionally, October's humidity is notably higher at 70%, compared to May's 46%. For a detailed look at conditions during this month, check out Flagstaff weather in October.
May and November present distinctly different weather patterns. In May, temperatures range from a low of -3°C (27°F) to a warm average of 13°C (57°F), with a maximum reaching up to 30°C (86°F). The month sees relatively low precipitation of 32 mm (1.3 in) over about 6 days, and humidity sits at a comfortable 46%. In contrast, November brings much colder temperatures, with a minimum of -16°C (4°F) and an average of 6°C (42°F), peaking at 20°C (69°F). The month experiences slightly less precipitation at 30 mm (1.2 in) over 3 days, but humidity is significantly higher at 79%. For more details on the weather in November, check out Flagstaff weather in November.
May and December present starkly contrasting weather conditions. In May, temperatures range dramatically from a chilly -3°C (27°F) at night to a warm 30°C (86°F) during the day, with an average of 13°C (57°F). The month sees relatively low precipitation at 32 mm (1.3 in) over six days, coupled with a comfortable humidity level of 46%. In contrast, December's temperatures plunge significantly, with nighttime lows of -20°C (-4°F) and only reaching a daytime high of 16°C (62°F), averaging just 1°C (33°F). While precipitation slightly increases to 36 mm (1.4 in) over the same six days, humidity rises considerably to 82%, creating a much colder and damp environment. For a closer look at December conditions, check out Flagstaff weather in December.
May in Flagstaff marks a transition into warmer weather, with temperatures rising significantly from the cooler months of spring. Unlike the chilly nights of early spring, evenings in May are pleasantly mild, making it an ideal time for outdoor activities. Despite experiencing a bit of rain on approximately six days, this month's average humidity remains comfortably low, allowing for clear, sunny skies and vibrant scenery. Overall, May serves as a delightful prelude to the hotter summer months, offering a refreshing change that invites both locals and visitors to explore the beauty of the season. For a more detailed overview, check out Flagstaff Climate.